SN4148-LFR page: 1 frontier electronics corp. 667 e. cochran street, simi valley, ca 93065 tel: (805) 522-9998 fax: (805) 522-9989 e-mail: frontiersales@frontierusa.com web: http://www.frontierusa.com chip high speed switching diodes SN4148-LFR features z designed for mounting on small surface z high speed z high mounting capability , strong surge withstand , high reliability z rohs mechanical data z case: 1206(3216),molded plastic, dimensions in millimeters z terminals: solder plated , solderable per mil-std-750 , method 2026 z polarity :indicated by cathode band z mounting position: any ratings symbol SN4148-LFR units reverse voltage v r 75 v peak reverse voltage v rm 100 v rectified current average half wave rectification with resist load at t amb 25 and f R 50hz note 1 i o 150 ma surge forward current at t p = 1 s and t j 25 surge forward current at t p = 1 s and t j 25 i fsm 4.0 1.0 ma power dissipation at t amb =25 pd 350 mw junction temperature t j 175 storage temperature range t s - 55 to + 175 characteristics t j =25 symbol min typ max units forward voltage at i f =10ma v f - - 1 v leakage current at v r =20v at v r =75v i r i r - - - - 25 2.5 na a reverse breakdown voltage tested with 100 a pulses v r 100 - - v capacitance at v f =v r =0 c tot - - 4 pf reverse recovery time from i f =10ma to i r =1ma v r =6v r l =50 t rr - - 4 ns note 1. leads kept at ambient temp. 0.124 ( 3.15 ) 0.116 ( 2.95 ) 0.043 ( 1.1 ) 0.031 ( 0.8 ) 0.063 ( 1.6 ) 0.055 ( 1.4 ) 0.020 ( 0.5 ) typ. 0.010 ( r0.25 ) typ.
SN4148-LFR page: 2 ratings and characteristic curve SN4148-LFR f=1mhz ta=25 capacitance between terminals (a) 5.0 4.0 3.0 2.0 1.0 0 io current % 120 100 80 60 40 20 0 0 25 50 75 100 125 150 175 200 ambient temperature ( ta ) 0 2 4 6 8 10 12 14 reverse voltage ( v ) fig. 4 -derating curve fig. 3 -capacitance between terminals characteristics 0 10 20 30 40 50 60 70 80 reverse voltage (v) 100u 10u 1u 100n 10n fig. 2 -reverse characteristics reverse current (a) 150 125 75 25 fig. 1 -forward characteristics 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 forward voltage (v) 1000 100 10 1 forward current (ma) 125 75 25 -25
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